Table 7

Mortality among workers potentially exposed to 2-mercaptobenzothiazole (MBT) and its derivatives (n=357 men), workers employed in the phenyl-β-napthylamine (PBN) plant (n=94 men), workers employed in the aniline department (n=385 men), and workers employed in the o-toluidine department (n=53 men), 1955–96

Cause of deathICD-8MBTPBNAnilineo-Toluidine
ObsExpSMRObsExpSMRObsExpSMRObsExpSMR
Cancers:
 Buccal cavity throat140–900.6000.1000.8000.00
 Oesophagus15031.520510.520401.7000.20
 Stomach15144.010041.526464.712920.4487
 Small intestine15200.1000.0000.1000.00
 Large intestine153  77-150 2.725721.021033.29400.30
 Rectum15431.916120.729932.213800.20
 Liver15500.3000.1000.4000.10
 Pancreas15711.85610.615822.19700.20
 Other digestive organs158–900.3000.1000.3000.00
 Nose and sinuses16000.1000.0000.1000.00
 Larynx16100.4000.1010.521700.10
 Lung and bronchus162–31516.79056.2811619.48311.952
 Bone17000.1000.0000.1000.00
 Skin172–310.428200.1010.424400.10
 Breast17400.1000.0000.1000.00
 Prostate18503.0001.1003.6000.30
 Testis18600.1000.0000.1000.00
 Other genital organs18700.1000.0000.1000.00
 Bladder188  77-160 1.7408 47-160 0.664142.0200 37-160 0.21589
 Other urinary organs18920.825410.338330.932910.1947
 Brain191–230.935100.3011.010200.10
 Thyroid19300.1000.0000.1000.00
 Lymphomas200–311.37700.6011.75900.20
 Leukaemia204–731.031700.3021.118200.10
 All neoplasms140–2395243.11212115.31374850.09675.1137
Non-cancers:
 Diseases of circulatory system390–4586775.5893127.51138388.19448.249
 Diseases of respiratory system460–5192018.9106117.21532522.211341.7239
 Accidents800–94922.96800.9023.55810.3290
 Suicide950–95911.47300.4011.66300.20
All causes158154.71026955.8124176180.6971716.9100
  • 7-150 p<0.05;

  • 7-160 p<0.01.